Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '558f90bbddb314b3328b0efb409599bdc156cb1fb002981635470ba2b5352a99' 
  AND token = 'vQPKM5q9b6wovdK2wLVZp0/FIUaa0pYqVkGDFNl0+HI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}